Here are the times for each chapter if you want to skip to a specific section:
Chapter 1: Making a Selection with the Pen Tool - 0:34
Chapter 2: Cleaning the Edges of a Mask - 3:35
Chapter 3: The Magic Wand - 11:27
Chapter 4: Using Gaussian Blur - 18:16
Chapter 5: Quick Select and Refine Edge - 23:18